Shrub rose plant named ‘KORbaspro’

ABSTRACT

A new and distinct variety of rose with long lasting, novel soft pink flowers, and attractive foliage with good disease resistance. It exhibits uniform, upright to bushy growth with abundant flowers. The new variety propagates well from cuttings and by grafting. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

CROSS REFERENCES AND FEDERAL R&D STATEMENT

There are no cross-referenced or related applications. This variety was developed without the aid of any research grant.

SUMMARY OF THE INVENTION

Genus, species and variety denomination: The botanical classification of the new rose plant is Rosa hybrida, ‘KORbaspro’.

BACKGROUND OF THE INVENTION

The new variety of rose plant of the present invention originated from a controlled crossing in a breeding program of two distinct parents during the summer of 1998. The crossing was between ‘KORmixal’ and ‘KORparesni’, both non-patented roses.

The resulting seeds were planted during the following winter. The resulting seedlings were evaluated and exhibited distinctive physical and biological characteristics. The new rose plant was selected as a single plant from the seedling beds due to its superior characteristics and asexually propagated for further evaluation. This new and distinctive rose variety is named ‘KORbaspro’.

SUMMARY OF THE INVENTION

The new rose plant may be distinguished from its seed parent, ‘KORmixal’ by the following combination of characteristics:

-   -   1. The flower color of the seed parent is red, while the flower         color of ‘KORbaspro’ is pink.     -   2. The petal count of the seed parent is single, while the petal         count of ‘KORbaspro’ is very double.

The new rose plant may be distinguished from its pollen parent, ‘KORparesni’ by the following combination of characteristics:

-   -   1. The growth habit of the pollen parent is upright, while the         growth habit of ‘KORbaspro’ is spreading.     -   2. The petal count of the pollen parent is semi-double, while         the petal count of ‘KORbaspro’ is very double.

The objective of the hybridization was to create a new and distinct rose plant with unique qualities, such as:

-   -   1. Uniform growth and flowering;     -   2. Abundant attractive, recurrent flowers;     -   3. Attractive and abundant foliage; and     -   4. Resistance to diseases encountered in landscapes and gardens.

This combination of qualities is not present in prior rose cultivars known to the inventor. These objectives have been substantially achieved and in that distinguish ‘KORbaspro’ from all other varieties of which we are aware.

As part of a rose development program, Tim-Hermann Kordes germinated seeds from the aforementioned hybridization and conducted evaluations and observations on the resulting seedlings in a controlled environment in Offenseth-Sparrieshoop, Germany. The resulting seedlings exhibited distinctive physical and biological characteristics. The new rose plant ‘KORbaspro’ was selected in May, 1998 from the seedling beds to be asexually propagated for further evaluation. The first asexual propagation of ‘KORbaspro’ was done by budding to seedling understocks in August, 1998 at the inventor's nursery in Offenseth-Sparrieshoop, Germany.

This initial and other subsequent propagations conducted in controlled environments demonstrate that ‘KORbaspro’ reproduces true to type in successive generations of asexual reproduction.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying drawing shows as true as is reasonably possible to obtain in color photographs of this type, the typical characteristics of the buds, flowers, reproductive organs, leaves, and stems of ‘KORbaspro’.

DETAILED BOTANICAL DESCRIPTION

The following is a description of ‘KORbaspro’, as observed growing in October, 2008 in a nursery in Jackson County, Oreg. on plants of two years of age. Color references are made using The Royal Horticultural Society (London, England) Colour Chart, 2001 except where common terms of color are used.

For a comparison, several physical characteristics of the rose variety ‘KORfloci04’, a rose variety from the same inventor described and illustrated in U.S. Plant Pat. No.19,457 and issued on Nov. 18, 2008 are compared to ‘KORbaspro’ in Chart 1.

CHART 1 Characteristic ‘KORbaspro’ ‘KORfloci04’ Flower bud color (¼ Red Group 56D Red Group 56C open) upper surface Open flower diameter 60-65 mm 70-75 mm Incidence of thorns per 10 12-16 20-25 cm of stem

-   Parents:     -   -   Seed parent.—‘KORmixal’.         -   Pollen parent.—‘KORparesni’. -   Classification:     -   -   Botanical classification.—Rosa hybrida, ‘KORbaspro’.         -   Commercial classification.—Shrub.

FLOWER AND FLOWER BUD

-   -   -   Blooming habit.—Continuous.         -   Flower bud.—Size: Upon opening, 15-17 mm in length from base             of receptacle to end of bud and 20-25 mm diameter at its             widest point. Bud form: Globular. Bud color: As sepals first             unfold, bud color is Red Group 56B and Red Group 56C. When ¼             open, the upper surface of petals is Red Group 56D and the             lower surface is Red Group 56D. Guard Petals Yellow-Green             Group 145B. Sepals: Size: Average 20 mm long×10 mm wide.             Shape: Sepals generally subulate. Sepal apex is generally             cirrose. Weak foliaceous appendages on three of the five             sepals. Base is flat at union with receptacle. Quantity:             Five. Margins: With stipitate glands. Surface texture: Inner             side: Covered in small white hairs. Outer surface: Smooth.             Stipitate glands are absent. Color: Upper surface             Yellow-Green Group 146A. Lower surface Yellow-Green Group             146B.         -   Receptacle.—Surface: Smooth. Color: Yellow-Green Group 144A.             Shape: Funnel-shaped. Size: 9-10 mm (h)×9-10 mm (w).         -   Peduncle.—Surface: With stipitate glands. Length: 30-35 mm             average length. Diameter: 2.0 mm average diameter. Color:             Yellow-Green Group 144B. Strength: Moderate. Borne: Multiple             buds per stem. Generally, 5-8 buds per flowering stem.             Anthocyanin: Greyed-Purple Group 184A.

-   Flower bloom:     -   -   Fragrance.—None.         -   Duration.—On the plant 5-6 days. Long lasting. Senesced             petals drop away cleanly.         -   Size.—Medium flowered garden rose. When open, the average             flower diameter is 55-65 mm and the average flower height is             30 mm.         -   Form.—Shape of flower when viewed from the side: Upon             opening, upper part: Flattened convex. Upon opening, lower             part: Flattened convex. Open flower, upper part: Flat. Open             flower, lower part: Concave.

-   Color:     -   -   Upon opening, petals.—Outermost petals: Outer Side: Red             Group 56D. Inner Side: Red Group 56D. Innermost petals:             Outer Side: Red Group 56D. Inner Side: Red Group 56D.         -   Upon opening, basal petal spots.—Basal petal spot, outermost             petals: Outer Side: Green-Yellow Group 1D. Inner Side:             Green-Yellow Group 1D. Basal petal spot, innermost petals:             Outer Side: Green-Yellow Group 1D. Inner Side: Green-Yellow             Group 1D.         -   After opening, petals.—Outermost petals: Outer Side: White             Group N155B. Inner Side: White Group N155B. Innermost             petals: Outer Side: White Group N155B. Inner Side: Red Group             56D.         -   After opening, basal petal spots.—Basal petal spot,             outermost petals: Outer Side: Green-Yellow Group 1D. Inner             Side: Green-Yellow Group 1D. Basal petal spot, innermost             petals: Outer Side: Green-Yellow Group 1D. Inner Side:             Green-Yellow Group 1D.

-   General Tonality: On open flower Red Group 56D. No change in the     general tonality at the end of the 5^(th) day. Afterwards, general     tonality is White Group N155B.

-   Petals:     -   -   Petal count.—Approximately 70-80 petals under normal             conditions.         -   Petal reflex.—Petals reflex somewhat.         -   Petal edge.—Entire with slight point in center of margin.         -   Petal shape.—Apex shape is round. Shape of base is acute.         -   Petal size.—25 mm long; 20-22 mm wide.         -   Thickness.—Thin.         -   Flower shape/arrangement.—Quartered rosette. Generally in a             regular pattern with overlapping edges.

-   Petaloids: Present.     -   -   Petaloid count.—Average of 2-5 per flower.         -   Petaloid edge.—Smooth.         -   Petaloid texture.—Smooth.         -   Petaloid shape.—Linear to elliptic. Shape of base is acute.             Shape of apex is a rounded point.         -   Petaloid size.—Petaloids are 15 mm long and 6 mm wide.         -   Petaloid color.—Color of inner side is Red Group 56C. Color             of outer side is Red Group 56D.

-   Reproductive organs:     -   -   Pistils.—Approximately 50 present. Stigmas: Location:             Slightly superior in position to anthers. Color:             Greyed-Yellow Group 160C. Styles: Length: 6-7 mm long.             Color: Green-Yellow Group 145C.         -   Stamens.—Approximately 5-10 on average and regularly             arranged. Anthers: Size: 2-3 mm long. Color: Yellow-Orange             Group 16A. Pollen: Absent. Filaments: Color: Yellow Group             13B. Length: 5-6 mm.

THE PLANT

-   -   -   Plant growth.—Vigorous. Upright to bushy habit. When grown             as a budded plant the average plant height is 75-85 cm and             the average plant width is 50-60 cm.         -   Stems.—Stem color: Young wood: Yellow-Green Group 145A.             Older Wood: Green Group 137B. Stem surface: Young wood:             Smooth. Older wood: Smooth.         -   Prickles.—Present. Incidence: 12-16 per 10 cm of stem. Size:             Average length: 8-9 mm. Color: Immature prickles:             Greyed-Yellow Group 162B. Mature prickles: Greyed-Orange             Group 164A. Senescing to Greyed-Orange Group 166B. Shape:             Deeply concave to concave. Anthocyanin: Color: Greyed-Purple             Group 184A.         -   Leaves and leaflets.—Normally 5-7 leaflets on normal leaves             in middle of the stem. Leaf size: 110 mm (1)×70 mm (w).             Quantity: Average. Texture: Upper side of leaflet:             Semi-glossy. Smooth. Under side of leaflet: Matte. Smooth.             Color, mature foliage: Upper Leaf Surface: Green Group 137A.             Lower Leaf Surface: Yellow-Green Group 146B. Color, juvenile             foliage: Upper Leaf Surface: Green Group 137A. Lower Leaf             Surface: Yellow-Green Group 146B. Anthocyanin intonation:             Absent.         -   Stipules.—Size: 20-22 mm long. 10 mm between the tips of the             stipule. Main body of stipule 6-9 mm in width. Shape:             Longitudinally flanged or winged along middle. Winged tips             turn downwards. Stipule color: Green Group 138A.             Anthocyanin: Greyed-Purple Group 184B. Presence of stipitate             glands: Present on margins. Margins: With stipitate glands.         -   Petiole.—Length: 10-15 mm. Diameter: 1.0-1.5 mm. Petiole             color: Yellow-Green Group 144A. Anthocyanin present on             juvenile tissue, Greyed-Purple Group 184A. Underneath:             Smooth. Stipitate glands: Absent.         -   Petiole rachis.—Length: 15-20 mm. Diameter: 1.0-1.5 mm.             Color: Yellow-Green Group 144A. Anthocyanin present on             juvenile tissue, Greyed-Purple Group 184A. Margins:             Stipitate glands present. Prickles: Occasional. Stipitate             glands: Present on margins.         -   Leaflets.—Size: Average size of the terminal leaflet is 45             mm (1)×25-30 mm (w). Shape: Ovate. Base: Ovate. Apex: Acute.             Margins: Serrated. Texture: Thin. Moderately glossy.

-   Hips/seed formation: Absent.

-   Winter hardiness: To date, the variety has been grown successfully     in Zone 5.

-   Disease resistance: Above average resistance to Powdery mildew     (Sphaerotheca pannosa), rust (P. disciflorum), blackspot     (Diplocarpon rosae), and Botrytis (Botrytis cinerea) diseases under     normal growing conditions. 

1. A new and distinct variety of rose plant as herein illustrated and described: (a) Forms attractive, long lasting soft pink flowers; (b) Exhibits uniform, upright to bushy growth habit; (c) Propagates well using traditional methods, and; (d) Exhibits very good resistance to disease under normal growing conditions, substantially as herein illustrated and described. 